To Next PageTo Next PageWhy is the clutch slipping on my Honda CRF450R 2020?
Clutch slippage in your Honda Motorcycle can occur due to several reasons: * Improperly adjusted clutch lever freeplay. * Worn or warped clutch discs/plates. * Weak clutch springs. * A sticking clutch lifter. * Or the presence of additive in the engine oil.
Why is the cylinder compression low on my Honda CRF450R 2020?
Low cylinder compression on your Honda Motorcycle can be attributed to: * Valve clearance being too small. * A valve stuck open. * Worn cylinder and piston. * A damaged cylinder head gasket. * Improper valve timing. * Or a seized valve.
Why is the ignition timing incorrect on my Honda CRF450R 2020?
Incorrect ignition timing on your Honda Motorcycle may be due to a faulty ECM or a faulty CKP sensor.
Why is the brake dragging on my Honda CRF450R 2020?
Brake dragging on your Honda Motorcycle can be caused by worn or damaged wheel bearings, a bent axle shaft, a drive chain that is too tight, or a punctured tire.
Why is my Honda CRF450R 2020 Motorcycle performing poorly at low and idle speed?
Poor performance at low and idle speed in your Honda Motorcycle can stem from an incorrect spark plug heat range, an incorrect spark plug gap, or the spark plug not being serviced frequently enough.
Why does my Honda Motorcycle pull to one side?
If your Honda Motorcycle pulls to one side, it could be because the front and rear wheels are not aligned, the fork or swingarm is bent, the axle shaft is bent, or the frame is bent.
Why is either wheel wobbling on my Honda CRF450R 2020?
Wheel wobble on your Honda Motorcycle may arise from excessive wheel bearing play, a bent rim, an improperly installed wheel hub, excessively worn swingarm pivot bearings, or a bent frame.
Why is the steering heavy on my Honda Motorcycle?
Heavy steering on your Honda Motorcycle could be due to a steering stem adjusting nut being too tight or damaged steering head bearings.
General| Engine Type | Single-cylinder four-stroke |
|---|---|
| Displacement | 449.7cc |
| Bore x Stroke | 96.0mm x 62.1mm |
| Compression Ratio | 13.5:1 |
| Induction | Programmed Fuel Injection (PGM-FI), 46mm throttle body |
| Ignition | Full transistorized ignition |
| Transmission | Close-ratio 5-speed |
| Final Drive | #520 Chain; 13T/49T |
| Front Brake | Single 260mm disc with twin-piston caliper |
| Rear Brake | Single 240mm disc |
| Front Tire | 80/100-21 |
| Rear Tire | 120/80-19 |
| Trail | 4.6 inches |
| Wheelbase | 58.3 inches |
| Fuel Capacity | 1.7 gallons |
| Front Suspension | 49mm inverted Showa fork with rebound and compression damping adjustability; 12.0 inches travel |
| Rear Suspension | Pro-Link Showa single shock with rebound and compression damping; 12.4 inches travel |
| Rake | 27°20' |
Key safety information for riding and operation.
Essential safety rules and guidelines for safe riding.
Guidance on using and installing accessories and modifications.
Location and importance of safety labels on the motorcycle.
Identifies the location of various controls and components on the motorcycle.
Explains the Malfunction Indicator Lamp and its functions.
Table correlating DTC codes with function failures and symptoms.
Details on indicators for engine modes, launch control, and torque control.
Guidance on rider preparedness before operating the motorcycle.
Checklist of pre-ride inspections for the motorcycle.
Detailed list of items to check before each ride.
Essential precautions for safe operation and avoiding hazards.
Instructions for using the side stand.
Explanation and adjustment of the torque control system.
Procedures for starting and stopping the engine.
Recommended procedure for breaking in the new motorcycle.
General advice and safety precautions before performing maintenance.
Critical safety precautions to follow during maintenance tasks.
Lists required inspection and service intervals for the motorcycle.
Identifies locations of components for service and maintenance.
Step-by-step instructions for specific maintenance tasks.
Maintenance procedures related to the engine.
Maintenance procedures related to the motorcycle chassis.
Maintenance procedures for electrical components.
Recommendations for cleaning and maintaining the motorcycle's appearance.
Checks and adjustments to perform between races or practice sessions.
Routine cleaning and lubrication after competition events.
Specifications for fuel type and octane number.
Step-by-step instructions for refueling the fuel tank.
How to inspect the fuel line for damage and leaks.
Specifications for fuel type and octane number.
Step-by-step instructions for refueling the fuel tank.
How to inspect the fuel line for damage and leaks.
Recommended API classification and viscosity for engine oil.
Procedure for checking and adding engine oil to the correct level.
Steps for draining and replacing engine oil and filter.
Recommended type of coolant and water for the cooling system.
Procedure for checking and adding coolant to the cooling system.
Inspecting for leaks, hose condition, and radiator fins.
Procedure for replacing the coolant in the cooling system.
Steps for cleaning the air cleaner element and housing.
Procedure for draining deposits from the crankcase breather tube.
How to inspect and adjust throttle grip freeplay.
Checking the throttle assembly position and rotation.
Lubricating the throttle cable ends for smooth operation.
Procedure for adjusting the engine's idle speed.
Inspecting and adjusting clutch lever freeplay.
Steps for removing clutch discs, plates, and related components.
Steps for installing clutch discs, plates, and related components.
Recommended standard and optional spark plugs.
Procedure for inspecting and replacing the spark plug.
Steps to remove the cylinder head cover for inspection.
How to position the piston at TDC on the compression stroke.
Measuring intake and exhaust valve clearances.
Steps to remove the camshaft for valve clearance adjustment.
Procedure for selecting and calculating correct shim thickness.
Steps for installing the camshaft after adjustment.
Steps to install the cylinder head cover after service.
Steps to remove the cylinder head for piston access.
Procedure for removing the cylinder from the crankcase.
Steps for removing the piston from the cylinder.
How to remove piston rings from the piston.
Steps to install the cylinder head after piston work.
How to inspect the front suspension for wear and damage.
Steps for removing the front suspension components.
Steps for draining and refilling fork oil.
Steps for installing the front suspension components.
Steps for changing the oil in the fork damper assembly.
Steps for installing the fork damper assembly.
Adjusting spring pre-load to set race sag and ride height.
Adjusting compression and rebound damping on the rear shock.
How to measure and adjust race sag for proper ride height.
Suspension tuning recommendations for soft terrain like mud or sand.
Suspension tuning recommendations for hard or fast tracks.
Guidelines for adjusting front suspension based on track type and symptoms.
Guidelines for adjusting rear suspension based on track type and symptoms.
Procedure for reading spark plug condition to assess air-fuel mixture.
Adjusting rear suspension pre-load for traction and stability.
Fork clamp position is not adjustable; standard position is key.
Adjusting wheelbase by adding/removing drive chain links for handling.
Effect of less driven sprocket teeth on performance and shifting.
Effect of more driven sprocket teeth on performance and shifting.
Tire recommendations for hard, slick terrain.
Tire recommendations for muddy conditions.
Tire recommendations for loose, sandy terrain.
Positioning control levers for comfortable operation.
Adjusting handlebar position, width, and shape for rider comfort.
Steps to take if a fuse blows and how to replace it.
Troubleshooting steps for a low or dead battery.
Location of VIN and engine serial numbers for registration and parts.
Technical specifications including dimensions, capacities, and engine details.
Torque values for various nuts, bolts, and fasteners.
Information on using oxygenated fuels and their compatibility.
Guidance on recording settings, maintenance, and competition data.
Recommended spare parts and tools to have for events.
Electrical wiring diagram for troubleshooting and service.
Information on obtaining service manuals and other guides.
How to contact Honda for support and feedback.
Information on dealer services and parts.
Tips on proper maintenance to prevent expensive engine repairs.
Key maintenance schedules and service frequencies.
Information on tire types, pressures, and inspection.
Key information about spark plug selection and maintenance.
Important specifications for coolant.
Main fuse rating.
Specifications for drive chain size and link count.
